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Journal impact factor for articles with and without ethical approval by research area. Means and 95% confidence intervals
| Research area | Ethical approval, mean (95% CI) | |
|---|---|---|
| Reported | Not reported | |
| Health sciences, somatic focus | 4.55 (4.14;4.96) | 6.35 (4.05;8.65) |
| Health sciences, non-somatic focus | 3.15 (2.71;3.59) | 3.04 (2.32;3.76) |
| Social sciences | 2.20 (2.03;2.37) | 1.86 (1.60;2.12) |
